@TechConnectify Ogilvie station/Accenture tower in Chicago has a vestibule "air lock" where one door closes and it forces you to wait like 15 seconds before it opens the next doors.

It's just as confusing as you would expect. I was pushing my toddler through in a stroller and thought we were stuck between the doors until a nice man yelled "just wait it'll open!" From the other side of the door.